A retargeting pixel is a code snippet placed on a website to collect data for retargeting purposes, tracking user interactions and behaviour.
The pixel collects information about website visitors, allowing advertisers to deliver targeted ads to those users as they browse other sites.
Implementing a Facebook Pixel on an e-commerce site to track user visits and display relevant product ads on Facebook.
Ensure proper placement of the pixel, comply with privacy regulations, and use collected data to refine retargeting strategies.